How to use this converter
- Select whether you have a gauge label, millimeters, or inches.
- Enter a value such as 00G, 10 mm, 3/8, or 0.375.
- Read the closest common jewelry size plus the millimeter and inch conversion.
Ear Gauge Size Converter
Convert plug, tunnel, and stretched-ear jewelry sizes between gauge, millimeters, inches, and common fractions.
Convert an ear gauge size
Choose a gauge size like 0G or 00G, or enter a millimeter or inch measurement to find the closest common jewelry size.
Converted size
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Gauge label—
Inches / fraction—
Nearby sizes—
Enter a size to see the conversion.
Ear gauge size chart
Common plug and tunnel sizes vary slightly by brand, especially around 00G. Use this as a shopping and measurement reference, then confirm the exact millimeter size on the jewelry listing.
| Size | Millimeters | Inches | Common fraction |
|---|
Quick sizing notes
Gauge labels are most common for smaller sizes. After 00G, body jewelry is usually sold by millimeters or inch fractions such as 7/16, 1/2, 5/8, 3/4, and 1 inch.
Ear gauge conversion FAQ
What size is 0G in mm?
0G ear jewelry is commonly about 8 mm, or roughly 5/16 inch.
What size is 00G in inches?
00G is commonly listed as about 10 mm, which is close to 3/8 inch. Some brands list 00G at 9 mm, so check the actual product measurement.
Is 2G bigger than 0G?
No. For ear gauges, 0G is larger than 2G. The size number gets smaller as the jewelry diameter gets larger until 00G, then millimeter and inch sizes take over.